I wouldn’t have thought he was calling innocent civilians terrorists at all.
I think it more likely Hamas is lying about casualty figures.
20,000 children dead was never a believable figure because then you’d have to believe the IDF was targeting kids which is totally illogical, or that number if correct which is unlikely, is mostly made up of some of the 30,000 14-19 year old child soldiers Hamas recruited during the war.
Israel knew Hamas would lie about them indiscriminately killing civilians as a propaganda tool before they went into Gaza, as they have in the previous smaller conflicts, hence the IDF taking extreme measures to avoid that.
Hamas obviously had a calculated plan to tell the most unbelievable lies knowing the Jew haters would believe and not question them, no matter how outlandish, as it reinforced their own view of the Jews.
There is a reason ‘Pallywood/Gazawood’ has long existed as a known practice by Palestinians.
Propaganda was their only real weapon against Israel before Oct 7th, it became a much bigger weapon once they realised that they could do what they did on Oct 7th and people would STILL be on their side and make excuses for them.
They could get away with anything easily, even with staged deaths designed to emotionally manipulate Western useful idiots and drive them into a frenzy of hate against the Jews.